59. A Short Synthesis of 3-Methyl-5-(2,3,6-trimethylphenyl)-1-penten-3-ol, a Sesquiterpene Isolated from Laurencia Nidifica
    Oppolzer, W.; Briner, P. H.; Snowden, R. L.
    Helv. Chim. Acta 1980, 63, 967-969

The racemic sesquiterpenoid alcohol 7 was synthesized in four steps (27% overall yield) from the cyclohexadienone 1. The key steps are the regioselective addition of the pentadienyllithium 2 to 1 and the Lewis-acid induced aromatization 4 → 6.

DOI : 10.1002/hlca.19800630425